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Ubuntu Security Notice USN-1641-1
November 28, 2012
keystone vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.10
- Ubuntu 12.04 LTS
Summary:
Keystone would allow unintended access to files over the network.
Software Description:
- keystone: OpenStack identity service
Details:
Vijaya Erukala discovered that Keystone did not properly invalidate
EC2-style credentials such that if credentials were removed from a tenant,
an authenticated and authorized user using those credentials may still be
allowed access beyond the account owner's expectations. (CVE-2012-5571)
It was discovered that Keystone did not properly implement token
expiration. A remote attacker could use this to continue to access an
account that is disabled or has a changed password. This issue was
previously fixed as CVE-2012-3426 but was reintroduced in Ubuntu 12.10.
(CVE-2012-5563)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.10:
python-keystone 2012.2-0ubuntu1.2
Ubuntu 12.04 LTS:
python-keystone 2012.1+stable~20120824-a16a0ab9-0ubuntu2.3
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1641-1
CVE-2012-5563, CVE-2012-5571
Package Information:
https://launchpad.net/ubuntu/+source/keystone/2012.2-0ubuntu1.2
https://launchpad.net/ubuntu/+source/keystone/2012.1+stable~20120824-a16a0ab9-0ubuntu2.3